| abstract |
(57) Abstract: The present invention relates to an antigen of a class of viruses having the ability to develop lymph node disorders that develop into human acquired immunodeficiency syndrome (AIDS). The essential morphological and immunological aspects of retroviruses that are infectious to human T4 lymphocytes and have been deposited with the CNCM under accession numbers I-502, I-532, I-642 or I-643. An antigen that can be recognized by an antibody elicited in a human by a characteristic HIV-2 retrovirus. |